Sifter mechanism



Jan. 2, 1923. 1,440,538; A. l. S. HALVORSEN.

SIFTER MECHANISM;

FILED {UN 11. 1922. 2SHEETSSHEET 1.

um HHHIHHHII I Jan. 2, 19.23.

1,440,538. A. I. S. HALVORSEN.

SIFTER MECHANISM.

men JULY 17. 1922. 2 SHEETS-SHEET 2.

ATTORNEY Patented Tan. 2, 11923.

AXEL I. S. HALVOBSEN, F ALBANY, INDIANA.

SIFIER MECHANISM.

Application filed July 17, 1922. Serial No. 575,701.

To all whom it may concern:

' a citizen of the United States, residing at Albany, in the county ofDelaware and State of Indiana, have invented certain new and usefulImprovements in Sifter Mechanisms, of which the following is aspecification.

My invention relates to sifters for flour bins and the like and it hasfor its object to simplify and improve the construction thereof.

Bins such as are incorporated in kitchen cabinets and the like forholding flour are commonly constructed with a sifter outlet at theirlower end within which is arranged a rotatably supported sieve that ismanually oscillated to cause the flour to discharge by gravity throughthe same. This sieve is mounted within a sifter body detachablyconnected with the bin and means, includ ing a manually operated handleupon the outside of said body, is provided by means of which the sieveis operated to cause sifted flour to be discharged from said outlet. Theprincipal object or" my invention is to improve the construction of thesieve mechanism of bins of this kind and the invention consists of asifter mechanism having the peculiar features of construction and modeof operation hereinafter pointed out.

In the accompanying drawings:

Figure 1 is a front elevation of a flour bin including a siftermechanism constructed in accordance with my invention.

Figure 2 is a plan view of the sifter mechanism.

Figure 3 is a side elevation, partly in section, of the sifter mechanismshown in l iaving reference to the drawings, a is the body of myimproved sifter mechanism and b the sieve. The body a is made from sheetmetal and at its lower end is formed with a spout 0/ adapted to receiveupon it a cap or cover (not shown) by which it is closed when the sifteris not in use. The sieve b is a saucer-shaped, or concaved, circularpiece of said sieve resting upon the middle-portion of said yoke, andthe ends of the latter being soldered to the chine wire 7) and screenZ); At its middle the yoke b has rigidly fastened to it a dependingspindle or stud b which, as shown in Fig. 2, is square in crosssection.This square stud occupies a square hole provided at the middle of thehub of a gear f that is supported by a shelf The shelf 0 is a flap ortang provided upon a girder c which extends diametrically across theinterior of body a and has its ends 0 fastened by rivets c to thelatter. At its middle the girder c is provided upon its under side witha countersink or socket c that is occupied by the hub of gear 7 so thatthe latter is held against lateral displacement, and this countersinkprovides a boss upon the top side of girder c by which the yoke 6 andparts carried thereby, are rotatably supported without liability-ofinterference between yoke b and girder 0. Circular apertures formedthrough girder 0 and flap 0 are occupied by the stud b so that the yokeb and'parts carried thereby are held against lateral displacement, saidstud being free to rotate in said apertures.

At one side thereof the girder 0 is made with two integral tangs a whichare bent downwardly and then laterally under the body portion of thegirder to provide two shelves for supporting a metal rack (Z provided atone side with gearteeth in mesh with the teeth of pinion f, the spacebetween said shelves andthe bodyportion of girder 0 being slightlygreater than the thickness of the rack to permit free movement of thelatter. As will be clear the rack d is held against lateral displacementby pinion f and the two tangs c. A spring 8 may be provided having oneend thereof connected with a depending lug" or tang d atone end of rack01? and its other end connected with a depending lug or tang c integralwith one of the shelves 0*. This spring serves to yieldingly hold therack at the limit of its movement in one direction with tang d againstthe other shelf 0 Spring 8, while desirable, is, however, not essentialto myinvention and may be dispensed with if desired.

The depending lug or tank d of rack (Z is made with a threaded apertureto receive gear teeth with flour.

the thr aded inner end it of a handle 7:- whose shank portion extemlsthrough an aperture yn'ovided in body a at m.

The body (4 is telescopically litted at its upper end upon the usualoutlet spout of the bin and when a supply of llour or the like is withinthe bin, said flour feeds by gravity lown onto the sieve Q willtherefore be clear that by means of handle it the rack 05 may bemanually reciprocated and said rack will then act through pinion j andstud B to oscillate the sieve causing the flour to pass through thelatter and discharge from nozale 0;.

The construction above described is ethcient, simple and inexpensiveand, as will be clear, the location of the rack (Z and pinion f belowthe girder 0 prevents clogging of the It will also be observed that theconstruction described has the advantage that the sifter may be removedfor cleaning by simply removing body wfrom the bin and. li ting thesieve out, and that when so removed the pinion f is held in its propernormal position by the pocket 0 -VVhat I claim is:

1. A SlftGT'HlQCllLlllSDl comprising a body for attachment to bin; agirder within. said body extending. diametrically across the same andhaving its ends fastened to said body, said girder being made at itsmiddle and upon its under side with a recess; a pinion pocketed w1th1nsaid recess; a spindle connected with said pinion and extending upwardlytherefromthrough said girder; a

"sieve rotatably supported upon the top side of isaid girder andconnected with said spindle; a rack slldably supported below andbye-said girder, said rack-being in engagement with said'pinion, andmeans connected with said rack and extending therefrom through the wallof said body to the exterior of the latter by means of which the "ark isreciprocated to oscillate the pinion, spindle and sieve.

body, said girder I v I v I ported upon the top side ol: said girder andconnected with said spindle; a: rack shdably "supported below and bysaid girder, said irack being in engagement with said pinion andbothsaid rack andsaid pinion being coveredandv sh elded. from the flour orthe like by said girder, and an extension from a 1 zsaid rack projectingthrough the wall of said body to. theexterior thereof by means of tenedto said incense which the rack is reciprocated. to oscillate the pinion,spindle and sieve.

S3. A sitter mechanism comprising a body for attachment to a bin; agirder within said body extending diametrically across the same andhaving its ends fastened to said body, said girder-being made at itsmiddle. and upon its under side with a recess; a pinion pocketed withinsaid recess; a spindle connected with said pinion and ntending upwardlytherefrom through said girder; a sieve rotatably and removably supportedupon the top side of said girder-and connected with said spindle; a rackslidably supported below and by said. girder, said rack being inengagement with said pinion and an extension from said rack projectingthrough the wall of said bodyv to the exterior thereof by means of whichthe rack is reciprocated to oscillate the pinion, spindle and sieve. p

4-. A sifter mechanism comprising a body for attachment to a bin; agirder within said body extending diametrically across the same andhaving its ends fastened to said body, said. girder being made at itsmiddle and upon its under side with a recess; a pinion within saidrecess; a tang integral with said girder and extending beneath saidpinion to support the latter withinsaid recess; a spindle connected withsaid pinion extending upwardly therefromthrough an aperture in saidgirder and downwardly-throughan ..1l'l3.6 in. said tang; a sieverotatably and "ily supported upon the top side of oer and connected withsaid spindle; racla slidably supported below and bysaid girder, saidrack being in engagement with said pinion, and anextension from saidrack projecting through the wall of said body to the exterior thereofbymeans of which the rack is reciprocatod to oscillate the pinion,spindle and. sieve.

. 5. A. sitter mechanism comprising a body tor attachment to a bin; agirder within said body extending diametrically across the'same andhaving its ends fastenedv to said body, said girder being made at itsmiddle and upon its under side with a recess; a pinion iin said recess;atangintegral with said. and extent n beneath s id pinionto g. thelatter within said recess; ie connected with said pinion extendlvtherefrom tnreugh an apergirder and meshing with said pinion; tangsintegral with said girder extending under and slidably supportingsaidrack with provision for endwise movem ntthereof but so as to hold. saidraclr against sidewise displacement and means connected "with-said "derand downwardly through rack and extending therefrom through the forcedand a bail-shaped yokewithin which wall of said body to the exterior ofthe latter said screen is centrally disposed and to the 10 by means ofwhich the rack is reciprocated ends of which said screen is fastened,said to oscillate the pinion spindle and sieve. yoke being engaged withthe spindle of the 6. A sitter mechanism constructed in acmechanism.

. cordance with claim'l wherein the sieve com- In testimony whereof Ihave aflixed my prises a circular saucer-shaped piece of wire signature.screen having its marginal portion rein- AXEL I. S. HALVORSEN.

